Machine for closing the ends of collapsible tubes



MACHINE FOR CLOSING THE ENDS 0F COLLAPSIBLE TUBES z m w E K N A M I Filed Feb. 26, I931 Patented Aug. 6, 1935 UNlTED-c-STATES PATENT OFFICE MACHINE FOR CLOSING THE ENDS OF COLLAPSIBLE TUBES I Joseph Mankiewicz, Maplewood, N. J., assignor, by inesne assignments, tolzusteroid Container Company, South Orange, N. J.

Application February 26, 1931, Serial No. 518,376

6 Claims. (01. lie-54.) v dle I4 is then. pulled over which pulls the cover This invention relates to 'animproved, machine for fastening clips to the fiat ends ofcollapsible tubes. The fiat ends are provided, in practice, with metal clips which arefolded over and then squeezed or compressed to make a tight closure. The machine is operated twice, once to fold the tube and then to compress it. .The machine is preferably manually operated and is simply constructed and does not endanger the fingers of the operator. I i

The invention is illustrated in the accompanying drawing in which Figure l is a perspec tive view of the machine in partly closed position. Figure 2 is a cross section of thelmachine in open position, said section being. taken on a, plane indicatedby line 2--2 in Figure 1. Figure 3 is a a cover by reason of the supporting springs 24 similar section showing the machine'folding the end of a tube and Figured is a section showing the machine compressing a tube. Figure 5 is an end view of one form of clip used on a tube and Figure 6 is an enlarged section showing the complete closure.

The machine comprises two elements hinged together at the back and the preferred form is used on a bench or table. The embodiment that is illustrated in the drawing has one element represented by a base In and the other element by a cover I l which cover is recessed or inclined on its under side as at Il These are hinged together as at 2, at one edge and spaced apart to form a gap l3 to allow space for the folding over of the flat end of a tube. The cover is operated by a handle I4. The fiat tube is provided with a clip I5 or its equivalent; The cover is made to receive this end so provided and is recessed as at I6 for this purpose. The recess IS in the cover has a lip which forms a relatively thin wall I! which wall forms the initial bend in the tube when the cover is brought forward and being thin it forms a tight fold. The other wall I8 of the recess bears on the outside of the fold in the tube. The recessed part of the base is indicated at Ill and acts as a guide to facilitate the placing of the tube inthe machine for thefirst or bending operation. The tube is limited in its insertion by an adjustable plate I9 in the cover. The plate I9 is adjusted to various sizes of tubes or clips to vary the width of the fold. The plate I9 can be secured in adjusted position by the screws 20 which pass through theslots 2| in the plate I9.

the operator to a position nearly back to the K position from which the cover started and the tube is easily'pushed back to release its bent end from the cover. The tube is then placed with its folded end on the anvil 22 which anvil lies alongside. the depressed part I0 of the base IE3. The cover is. again pulled over by the handle I4 and the cover and the anvil co-operate to flatten or crimp the clip and the end of the tube. This step is shown inFigure 4. The tube can be positioned by'a yielding gage such as provided by the two pins 23 which yield to pressure from the placed under the pins. The anvil is inclined upward relative to the hinged end of the machine andthe recessed part is inclined downwardly from the said hinged end of the machine. They the parts in a shape to be fully compressed by the operation on the anvil 22. This will be clearlt seen from the clearance shown in Figure 3.

When the last operation is completed the tube is folded at the end as in Figure 6 and the machine is placed in the position shown in Figure 2 ready for theprimary operation on another tube.

When folding celluloid tubes it is sometimes desirable to heat the cover I I to more easily bend the material of the tube and I install an electric heater 25 at a suitable place on the cover.

Various changes may be made in the arrangements and proportion of the parts without departing from the scope of the invention.

I claim:

1. A machine for closing the ends of collapsible tubes comprising a base the top surface of which is provided with a depressed part, said base adapted also to provide a raised anvil portion, a cover hinged to the back of the base and having a recessed edge to receive the closed end extending across to engage the anvil whereby a tube in the recess can be partly crimped by one movement of the cover and can be completely crimped by engagement between the cover and the anvil.

2. A machine for closing the ends of collapsible tubes comprising a base with a hinge at the back and having a recessed portion extending downwardly toward the front, said base adapted also to provide an anvil extending upwardly toward the front, the recess and anvil being side by side, a cover hinged at the back to the hinge of the base and extending across both the recess in the base and the anvil, the hinged end of the cover having an inclined part on the under side and a narrow recess in its edge, one wall of the recess being relatively thin, said base adapted further to provide at its outer end a support for a yielding gage.

3. A machine for closing the ends of collapsible tubes comprising a base with a hinge at the back and having a recessed portion extending down wardly toward the front, said base adapted also to provide an anvil extending upwardly toward the front, the recess and anvil being side by side, a cover hinged at the back to the hinge of the base and extending across both the recess in the base and the anvil, the hinged end of the cover having an inclined part on the under side and a narrow recess in its edge, one wall of the recess being relatively thin and an adjustable plate inside the cover with one edge forming the rear face of the recess in the cover whereby the depth of the recess can be varied.

4. A machine for closing the ends of collapsible tubes comprisinga base with a hinge at the back and having a recessed portion extending downwardly toward the front, said base adapted also to provide an anvil extending upwardly toward the front, the recess and anvil being side by side, a cover hinged at the back to the hinge of the base and extending across both the recess in the base and the anvil, the hinged end of the cover having an inclined part on the under side and a narrow recess in its edge, one wall of the recess being relatively thin and an adjustable plate inside the cover with one edge forming the rear face of the recess in the cover whereby the depth of the recess can be varied and a heating element on the cover, one end of said plate projecting from the cover for manipulating the plate for adjustment.

5. A machine for closing the ends of co1lapsible tubes comprising a base with a hinge at the back and having a recessed portion extending downwardly toward the front, said base adapted also to provide an anvil extending upwardly toward the front, the recess and anvil being side by side, a cover hinged at the back to the hinge of the base and extending across both the recess in the base and the anvil, the hinged end of the cover having an inclined part on the under side and a narrow recess in its edge, one wall of the recess being relatively thin and an adjustable plate inside the cover and with one edge forming the rear face of the recess in the cover whereby the depth of the recess can be varied, one end of said plate projecting from the cover for manipulating the plate for adjustment.

6. A machine for closing the ends of collapsible tubes comprising a base, a cover, the cover being hinged at one end to the base and spaced therefrom to permit the folding of the end of a tube, and having a recess to receive the end of a tube, said recess having a narrow edge to fold the tube when the cover is partly closed, said base adapted also to provide an anvil on which the folded tube can be compressed to complete the fold by a complete movement of the cover, said base being further adapted to provide a support for resiliently mounted pins.

JOSEPH MANKIEWICZ. 

